[1]黄向华 曾宏达 陈惠 王婷婷 杨玉盛**.基于静态箱法研究城市草坪空气负离子来源及其影响因素[J].应用与环境生物学报,2021,27(03):1-9.[doi:10.19675/j.cnki.1006-687x.2020.05015]
HUANG Xiang-hua,ZENG Hong-da,CHEN Hui,et al.Study on sources and influence factors of negative air ions in urban lawn based on static box method[J].Chinese Journal of Applied & Environmental Biology,2021,27(03):1-9.[doi:10.19675/j.cnki.1006-687x.2020.05015]
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基于静态箱法研究城市草坪空气负离子来源及其影响因素()
HUANG Xiang-hua,ZENG Hong-da,CHEN Hui,et al.Study on sources and influence factors of negative air ions in urban lawn based on static box method[J].Chinese Journal of Applied & Environmental Biology,2021,27(03):1-9.[doi:10.19675/j.cnki.1006-687x.2020.05015]
《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]
- 卷:
- 27卷
- 期数:
- 2021年03期
- 页码:
- 1-9
- 栏目:
- 简报
- 出版日期:
- 2021-06-25
文章信息/Info
- Title:
- Study on sources and influence factors of negative air ions in urban lawn based on static box method
- Keywords:
- air negative ions; source; urban lawn; static chamber method
- 摘要:
- 空气负离子（NAI）是评价空气清洁程度的重要指标，但城市绿地NAI的不同来源及相对贡献国内外尚未见报道。为更好地理解NAI在城市区域的生成机制, 运用静态箱隔离法对典型城市草坪（Zoysia matrella）不同来源（植物、土壤、大气本底、外源）的NAI进行动态观测，并采集气象站同步数据, 分析各来源NAI的浓度值、贡献率及影响因素。不同来源NAI日变化特征不同。保留植物的静态箱内NAI浓度日均值为1 478 ions/cm3，峰值可达2 522 ions /cm3；植物来源、土壤来源、大气本底来源的NAI日均值分别为1 389 ions /cm3、101 ions /cm3和98 ions /cm3；对静态箱内NAI平均贡献率分别为 83.5% 、8.3%和8.2%；静态箱外开放环境的NAI浓度平均只能达到静态箱中水平的26.2%。植物和大气本底来源NAI均与温度显著正相关，与相对湿度、气溶胶及主要大气污染物无显著相关性；而土壤来源NAI与气温显著负相关，与湿度无明显相关性，与各大气主要污染物均呈显著正相关。外源NAI与各上述因子均无明显相关性。本研究表明：植物是城市草坪NAI的主要贡献者，土壤和大气本底的贡献相对较低。环境因子对不同来源NAI的影响机制不同，温度和湿度是主要影响因素，主要大气污染物仅对土壤来源的NAI影响较显著。
- Abstract:
-
Negative air ions (NAI) is an important indicator of air cleanliness. The contribution to total NAI in urban green space by different sources has not yet been reported both at home and abroad. In order to better understand the mechanism on formation of NAI in urban area, the static chamber method was used to conduct dynamic observation on NAI from different sources (plant, soil, atmospheric background and external source) of the typical urban lawn (Zoysia matrella) , and the synchronous data of the meteorological station were collected. The concentrations of NAI, contributions by different sources and the influencing factors were analyzed. The diurnal variations of NAI from different sources varied. The daily average concentration of NAI in the static chamber with plants was 1 478 ions/cm3, with a peak of 2 522 ions/cm3. The daily average concentrations of NAI derived from plant, soil and atmospheric background were 1389, 101 and 98 ions/cm3, accounting for 83.5% , 8.3% and 8.2%, respectively. The average NAI concentration outside the static chamber could only reach 26.2% of the level inside the chamber, with a daily mean concentration of 296 ions/cm3. Both of NAI from plant and from atmospheric background have positive correlation with temperature, but have no significant correlation with relative humidity, aerosols and major atmospheric pollutants. While NAI derived from soil has significant negative correlation with air temperature and positive correlation with all major atmospheric pollutants, no significant correlation with humidity was found. There was no significant correlation between exogenous NAI and the above factors. Our result indicated that plants are the main contributors to NAI in urban lawn, while the contributions by soil and atmospheric background to NAI are relatively low. The influences of environmental factors on NAI of various sources differ. Temperature and humidity are the main influencing factors, while the major atmospheric pollutants have significant effects only on NAI from soil.
备注/Memo
- 备注/Memo:
-
收稿日期 Received: 2020-05-08 接受日期 Accepted: 2020-07-24
国家自然科学基金资助项目（项目编号：31400609，31200366）和福建省属公益类科研院所基本科研专项（项目编号：2011R1037-6）Supported by the National Natural Science Foundation of China (31400609，31200366), Basic Scientific Research Projects of Public Welfare Research Institutes of Fujian Province
**通讯作者 Corresponding author (E-mail: geoyys@163.com)
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